I got this adaptor thing from o2 last weekend which purports to give A2DP support for the iPhone. Although it doesn’t say on the packaging that it works with the 3g model luckily it does. It may be a slightly finickity method but it does work just fine and adds some extra usesbility. It also works with my iPod 80gb classic.
So, one less thing for the anti-iphone brigade to decry about Apples finest!!